json - PHP json_decode not working - displays NULL output -

i'm trying use json decode retrieve information it's not working, it's showing data null when use var_dump

here's json formatted data passed in url

ordersummary={"orderinfo":[{"itemnumber":"1","quantity":"3","price":"5.99","productname":"item_b"}]} 

when echo un-decoded string following

echo $_get['ordersummary']; //displays following {\"orderinfo\":[{\"itemnumber\":\"1\",\"quantity\":\"3\",\"price\":\"5.99\",\"productname\":\"item_b\"}]} 

however, when try decode result null

$order = $_get['ordersummary']; $data = json_decode($order,true); echo "<pre>"; var_dump($data); die(); //displays following <pre>null 

is not formatted?

run input string through stripslashes() first.

$input = '{\"orderinfo\":[{\"itemnumber\":\"1\",\"quantity\":\"3\",\"price\":\"5.99\",\"productname\":\"item_b\"}]}';  print_r(json_decode(stripslashes($input))); 

output

stdclass object (     [orderinfo] => array         (             [0] => stdclass object                 (                     [itemnumber] => 1                     [quantity] => 3                     [price] => 5.99                     [productname] => item_b                 )          )  ) 

demo

alternatively

turn off magic_quotes_gpc. considering has been deprecated (and removed in 5.4), this better option.